Question

Life span of oviparous organism is less compare to viviparous organism. Why?

Answer 1

Proper embryonic care and protection is absent

In oviparous animals such as reptiles and birds, fertilized eggs are covered by hard calcareous shells and are laid in a safe place. After the incubation period, young ones hatch out. In viviparous animals such as majority of mammals including human beings, the zygote develops into a young one inside the body of the female individual. After certain growth, young ones are delivered by the female individual. Due to proper care and protection, the chances of survival of young ones are more in viviparous individuals.

So, the correct answer is 'Proper embryonic care and protection is absent'.